withkai · Android & iPhone

Kai, your AI assistant, in your pocket.

Every top AI model in one chat, an Agent that finishes the job, images, decks, memory and schedules — now as its own app. Same Classai account, same credits, chats in sync with the web.

Download for AndroidiPhone · coming soon

Version 1.0.0 · 6.2 MB · 1 November 2026 · Android 8.0+

Hi, I'm Kai 👋

What should we work on today? Ask me anything — I'll pick the best model for it.

Features

Everything Kai does on the web, made for your thumbs.

  • Every top model, one chat

    Claude, GPT, Gemini, DeepSeek and more — or let Kai Auto pick the right one for each message.

  • Agent mode

    Kai searches the web, reads pages, splits work across helpers and comes back with the finished job.

  • Images

    Generate and edit images in the chat, then save or share them straight from your phone.

  • Decks

    Ask for a presentation, pick a theme, export as PDF or PowerPoint — ready to send.

  • A Kai that learns you

    Memories and skills grow as you use it. Custom instructions and a spending cap you control.

  • Schedules

    “Every morning at 7, summarise AI news” — Kai runs it and notifies you when it's done.

  • Your servers

    Kai Connector runs commands on your own Linux server — you approve each one from a notification.

  • Made for phones

    Talk instead of typing, snap a photo or attach a PDF, share anything from other apps, hear answers aloud.

One Classai account

Web & app, always the same Kai.

  • One account

    Sign in with your Classai account — email, Google, or Apple on iPhone.

  • Chats in sync

    Start on your phone, continue at router.classai.id/dashboard/kai, and back.

  • Same credits

    Kai uses your Classai Router credits. Top up through WhatsApp in a minute.

Share to withkai from any app Answers read aloud

Install on Android

Three taps and Kai is on your phone.

  1. 1. Download the APKOpen classai.id/app-kai on your Android phone and tap Download for Android.
  2. 2. Allow it onceIf your phone asks, let your browser install unknown apps — only for the file from classai.id.
  3. 3. Install & say hiTap Install, open withkai, and Kai greets you. Sign in with the same Classai account.

On iPhone? withkai for iPhone is on its way through TestFlight and the App Store. Until then, Kai is ready in Safari at router.classai.id/dashboard/kai.